My new project: Pig Roaster, Rotisserie Motor suggestions please

Hey guys,

Well as the title states my latest project is to build a pig roaster . Not exactly an R/C project, although it certainly has the potential for that in the future.
I am trying to find a bugdet minded motor setup to use for my rotisserie and when it came to motors you guys were the first ones I thought of.

So what I need is a motor that turns at about 2 rpm thru a gear reduction or what ever. 120v is probably the best option but 12v might be doable using a car battery and maybe a battery charger on to keep the power up. I have found a motor that is sold for this purpose, but the price is crazy, I'd like to keep it under $100 for a motor if possible. Anyway here is the link to the motor to help out with motor specs.
E-Z Que Commercial Heavy Duty 110 UL approved, 2 RPM 1/4 horse power, TEFC shaded pole gear motor

http://www.ezqueinc.com/motors.htm

There has to be some sort or motor or gear reduction system that will work for my app 1-4rpm or so and not cost an arm and a leg.